/*
 * Copyright 2011 Christoph Ludwig (christoph[at]chludwig.de). All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.chludwig.ehumanities.provenance.provider;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;

import de.chludwig.ehumanities.provenance.exception.ProvenanceFileNotFoundException;

/**
 * Map file not found exceptions to 404 error codes.
 */
@Provider
public class FileNotFoundMapper implements ExceptionMapper<ProvenanceFileNotFoundException> {

  @Override
  public Response toResponse(ProvenanceFileNotFoundException exception) {
    if(exception.isGone()) {
      return Response.status(Status.GONE).build();
    }
    else {
      return Response.status(Status.NOT_FOUND).entity(exception.getMessage()).type(MediaType.TEXT_PLAIN_TYPE).build();
    }
  }

}
